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m <br />rn <br />`m <br />CD <br />0 <br />S <br />C.0 <br />CV <br />O <br />J <br />NCo <br />02 <br />N <br />E <br />00 <br />M <br />ATTIC VENTILATION CALCULATIONS - B1 <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1/300 Rule <br />Ridge <br />Off -Ridge <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt. <br />Req.) <br />(Ft.) <br />Total <br />Ventilation <br />ATTIC <br />Provided <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SQ. FT. <br />SQ. IN. of <br />by Upper <br />SQ. IN. of <br />of vented <br />IN, of <br />of <br />ventilation to <br />SQIN. of <br />SQ. IN. of <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />. <br />Ventilation <br />Ventilation <br />(See Elev ) <br />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main <br />21.00000 <br />2.000000 <br />Floor <br />2377 <br />2282 <br />326 <br />1141 <br />81 <br />570 <br />0 <br />591.0 <br />315.0 <br />276.0 <br />(Zorn 1) <br />**NOTE** <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL, <br />ROOF PLAN <br />SCALE: %4'=1'-0" <br />General Notes <br />ROOF CRITERIA: <br />• 12" OVERHANG U.N.O. <br />• PLUMB CUT FASCIA ROOF <br />• PITCH PER ELEVATION <br />**G.C. VERIFY ROOF PITCH** <br />ROOF PITCH VARIES PER SUBDIVISIONS IT IS THE <br />CONTRACTORS RESPONSIBILITY TO VERIFY <br />ROOF SLOPE REQUIREMENTS WITH TRUSS <br />MANUFACTURER. <br />**ELECTRICAL SPECIFICATION NOTES** <br />ELECTRICAL CONTRACTOR MUST VERIFY WITH <br />THE SPECIFICATIONS FOR THE TYPE OF FIXTURE <br />TO BE USED. LIGHT FIXTURES SHOWN ARE FOR <br />LOCATION PURPOSES. <br />Exterior Covering <br />R703.7 Exterior plaster. <br />Installation of these materials shall be in compliance with ASTM C <br />926 and ASTM C 1063. <br />R703.7.1 Lath. <br />All Lath and lath attachments shall be of corrosion -resistant <br />materials. Attached per ASTM C 1063. <br />R703.7.2 Plaster. <br />Plastering w/ portland cement plaster shall be not less than three <br />coats when applied over metal lath or wire lath and shall be not <br />less than two coats when applied over masonry, concrete. <br />R703.7.3 Water-Resisitive Barriers. <br />Water-resisitive barriers shall be installed where cement plaster <br />(stucco) is to be applied over wood -based sheathing, shall include <br />a water -resistive vapor -permeable barrier. The individual layers <br />shall be installed independently such that each layer provides a <br />separate continuous plane and any flashing intended to drain to <br />the water -resistive barrier is directed between the layers. The <br />barriers shall consist of one of the following. <br />1. Two layers of an approved water resistant barrier material in <br />accordance with R703.2. <br />2. One layer of an approved water -resistive barrier (paperbacked <br />stucco lath) over an approved synthetic house wrap. <br />R703.4 Flashing. <br />Approved corrosion -resistant flashing shall be applied <br />shingle -fashion in a manner to prevent entry of water into the wall <br />cavity or penetration of water to the building structural framing <br />components. Flashing shall be installed at the following locations. <br />• Exterior window/door openings. <br />• Intersection of chimneys or other masonry contructions with <br />frame walls. <br />• Under and at the ends of masonry, wood or metal copings <br />and sills. <br />• Continuously above all projecting wood trim. <br />• Where exterior porches, decks or stairs attach to a wall or <br />floor assembly of wood -frame construction. <br />• At wall and roof intersections <br />• At Built-in gutters. <br />Attic Ventilation <br />Attic Ventilation to be in compliance with the Florida Building Code 6th Edition <br />(2017) Residential R806. <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />the space to be ventilated. Upper ventilators shall be located no more than 3 feet <br />(measured vertically) below the ridge or highest point of the space, with the <br />balance of the required ventilation provided by eave or cornice vents. <br />**CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN** <br />(Values to be verified with Manufacturer Specifications) <br />• RIDGE VENTS 15 SQ. IN. OF NET FREE AREA / LINEAR FT. <br />• OFF -RIDGE VENTS 138 SQ, IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ, IN. OF NET FREE AREA / SQ. FT. <br />,a� E <br />(h V <br />Z M <br />.w g <br />CO <br />a <br />crs <br />�V — <br />p w <br />T <br />l! } ZD <br />0 <br />f `-- <br />(, <br />o 0 <br />m N <br />r E <br />o <br />®- U <br />M <br />M <br />2-0 c) <br />N <br />0 p <br />C� a)>r-00 <br />o <br />0) <br /><C rn <br />Q o <br />CL <br />Al III <br />BID. <br />N C B D C <br />IV <br />N � <br />N O M'�� <br />U) Z W wM�lz w z <br />F J dQ I C <br />O a <br />"N w <br />W -Ni <br />W U ���� a <br />a �9 <br />Z p c� z <br />Vi 2 a o <br />Ai <br />13 <br />`W .FQ$ENG.0 M WWNT;.❑ <br />Cc�� 9 - <br /><}O � I1 f o <br />r <br />•'® t+1; , <br />yR Q94�t <br />1! ap <br />To the best of the Engineer's knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2017 Florida Building Code - <br />Residential 6th Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />4600 W, Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />€oz <br />3� <br />wo <br />¢� <br />g F <br />LU<WX <br />Uz00 <br />000!� <br />zUaZ <br />�:5z <br />WZ2 <br />a LU <br />Y.. N <br />[j <br />W <br />fa 1U1 <br />j� <br />^, <br />W <br />Z z <br />rz <br />� Z <br />g <br />v, <br />N <br />z <br />z <br />O <br />y'0� <br />V <br />Q <br />w <br />�JCL <br />IL <br />OO <br />0 O <br />< <br />i <br />4, <br />0 <br />_., <br />O <br />oaod <br />r. <br />Z ¢ Z <br />�FLU <br />w <br />¢¢gam <br />z <br />z <br />° <br />O Z <br />W <br />Q w w <br />¢z� <br />�.{ <br />w <br />Q <br />z <br />F V <br />gWo <br />00 <br />wWz <br />z <br />to <br />0° <br />oo <br />z <br />g <br />= <br />z <br />¢ UJ <br />� <br />SCALE : AS NOTED <br />DATE : 3/7/2018 <br />TECH: JMUROSKI <br />VERSION NO. <br />4mO <br />SHEET NO. <br />5.0 <br />